A1 = readmatrix('SHG_T.xlsx')

x1 = A1(:,1)
y1 = A1(:,2)

hold on
plot(x1,y1,'linewidth',1,'color',[0 0 0])
scatter(x1,y1,10,'filled','MarkerFaceColor',[0 0 0])
xlim([25,75])
ylim([0,7000])
xticks(20:10:70)
yticks(0:2000:6000)

xlabel('Temperature [K]', 'fontname','Arial', 'fontsize',7,'fontweight','bold')
ylabel('SHG Counts','fontname','Arial', 'fontsize',7,'fontweight','bold')
set(gca,'XMinorTick','on','YMinorTick','on')
set(gca,'box','on','Xcolor',[0 0 0],'Ycolor',[0 0 0])
box on
hold off
set(gcf,'Position',[0, 0, 300, 214.5])